Vehicle brake



June 7,1921. H. G CHASE 70 VEHLCLE BRAKE Original Filed March 22 .1926

Fg hz Fig.2

IN V EN TOR.

--ofbraking surface and a amount of coolin ther object of which employs into frictional engagement with one another.

.tained by a wiring diagram of ing, 4 indicates a Secured to the plate 8.and

Patented June 7, 1927. Q p

llN lTED STATES 1,531,470; PATENT omcs.

nnmmon c. ones, 01* ms marinas,

'vnmcm 3am Application filed March 22, 1926, Serial m. 56,501. Renewed April 9, 192?.

This invention relates to a vehicle brake disks adapted to be moved- -It is the primary bject .of this invention to rovide a brake of the character descri ed which'is compact, has a maximum corresponding surface. Another object of this invention 1s to provide a brake which is especially adaptable to heaxX vehicles of. large load carrying'capacity. further obprovide a'brake ranged that it ma be easily operable from the tractor or lea ing vehicle. A still furthis invention is to provide a brake of the disk type having anexpansi-v ble disk adaptedto be crowded between adjacent disks. 1 20 These objects together with other objects and corresponding accomplishments are obmeans of the embodiment of 'my invention illustrated in the accompanying drawing, in which:

Fig. 1 is an axial section through a fragment of an axle and a wheel with my improved brake mounted thereon, Fi 2 1s a. section through the electro-mec anical motor as seen on the line -22 of Fig. 1;. and Fig. 3 is an elevation of the brake as seen looking from the inside'of the wheel, an electrical circuit for-controlling the motors being indicated.

Referring more particularly to the draw- 7 wheel axle which is stationary and has journalled'thereon a wheel The wheel and axle are of a well known type and formed on the wheel are bosses 6which are bored to receive bolts. Secured to the wheel by means of bolts 7 extending throu' h the bores of the bosses is a plate or-dis 8 preferably formed of sheet metal.

spaced therefrom by means of spacer bushings 10 and bolts. is a ring or disk 9; In this manner adisk member is provided which is secured'to the wheel and must rotate therewith. The

a bell end. lit-the edge of bolt holes for receiving bolts 1 1. The bolts .s'ecur'e plates 15.- and. 16 to the sleeve. w plates are ofring-form' and atthe inner plates.8 and 9 form a ,channel th'erebetween ,to receive a working disk member.

Keyed to the shaft 4 is a sleeve'll having 12 clearing'the hub of the; wheel. the hell .are lugs 13 having The . plunger to plate 16 edge of plate 16, fingers 17 are provided by cuttlng the metal. The bolts 14 are passed curromrm; nssren'on or onr-rratr' ro aromas wanna, or LQS enemas, cauronm.

through the ends of the spring fingers and thereby plate 16 is secured to the sleeve by a resilient mounting which allows a limon. I plates 8 and The plates 15 and 16 are faced with brake linings 18 and 19 to take care of wear. To

16 areoperate the brakes, plates 15 and spread apart .so that the brake linin 18 and 19 .are moved in engagement wit plates 8 and 9 and this spreading is produced with .a force commensurate with the braking fl'ect desired. I have disclosed a convenient electro-inechanical means for spreading or expanding theworking disc member.

At suitable places, the plate 16 is provided with holes in registration with smaller corresponding holes toreceive posts 20, The

posts 20 are fixed to the plate 15 and clear the holes in plate 16 so that the latter is free to be moved. 'The posts serve to secure thereto a solenoid *21 having a movable plunger core 23. The core is secured to plate 16 by means of a threaded extensidn 24 having a nut, mounted thereon, the nut extending through anopenin so. as to clear late 15. In this manner t e sol noid b0 y :is secured to plate 15 and the 5 forming a motor for operatinglthe working. disk member. Upon energization' of the solenoid, the plunger is drawn into the body spreading therebyexpanding the working disk mem plates 15 and 16- away fromone another, and

her so that it crowds between theplates 8- and 9 on the other disk member. The braking force exerted amount offorce which 1s exerted-by the motor. In the'particular construction disconductors 25 and 26. Conductor 26 is conwindings of these' be connected in parallel as in- 1 is de endent upon the r closed herein, there are three Spreaders or nected to a sourceof electrical energy hel-ev I in indicated for'illus'trative purposes only as. a battery 2'2". The other terminal 'of the battery is connected 'to a'rheostat armj28 to ited lateral .movement. Plates 15 and 16 extend be- -member providing a motor working member may be spread.

moving over a variable resistance 29. Thus, the amount of ener ization of the solenoids and their pull may e varied. It is obvious that other means maybe employed to control the force exerted by the spreaders.

vso as to be rotated therewith and the other being held against rotation, a plunger secured to one of the plates of said working member. and means for moving said plunger secured to the other plate of said workingwhereby said 2. A brake comprising a rotatable element, a disk member having spaced plates,

r for bein aworking disk member comprising a pair of plates arranged side b side and mounted spread lateral y-so as to expand said wor 'ng memberand frictionally engage the plates of the other member, one of said members being secured to said element so as to be rotated therewith and the other of said members being held against rotation, a plunger core secured to one of the plates of said working member, a solenoid for said plunger securing it to the other plate of said work n member, and means to energize said solenoi whereby to spread said plates. 3. A brake comprising a rotatable element, a disk memberehaving spaced plates, a pair of plates mounted side by side to form a working member, the plates of said work-' ing member being formed of resilient metal and havingspring fingers cut therefrom, means securing the springifingers to the other plate of said working member so as to provide a resilient mounting permitting spreading of said working member, one of said members being secured to said element so as to be rotated therewith and the other member being held against rotation, and means for spreading the plates of said working member with selected pressures.

4. A brake comprising a :rotatable element, a disk member having spaced plates, a pair of plates mounted side by side to form a working member, one of said pair of plates being formed of resilient metal-and having spring fingers cut therefrom, means securing the spring fingers to the other plate of said pair so as to privide a resilient mounting permitting spreading of said working mem ber, oneof said members being secured to said element so as to be rotated therewith and the other member being held against rotation, a plunger securedfto one of the plates of said working member, andmeans for moving said plunger secured to the other plate of said working member providing a motor for expanding said working member.

5. A brake comprising a rotatable 'element, a disk member ha ing spaced plates,

a pair of plates mounted side by side to form a working member, said plates being formed of resilient metal and having spring fingers cut therefrom, means securing the spring fingers to the other-plate of-said working member so as to provide a resilient mounting permitting expanding of said working member, one oi said members being secured to said element so as to be rotated therewith rotation, a plunger core secured to-one ofitlie or said plunger secured to the other of said plates, and means to energize said solenoid whereby to expand said plates.

In witnessthat I claim the foregoing I have hereunto subscribed my name this 11th day ofMarch, 1926. 1

' HAMILTON o. CHASE.

and the other member being held a ainst so 

